This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A051084 #15 Sep 08 2022 08:44:59
%S A051084 2,3,17,43,59,83,89,107,113,137,179,227,233,251,257,283,307,347,353,
%T A051084 419,433,443,449,457,467,499,563,569,587,593,617,641,643,659,683,739,
%U A051084 809,827,857,929,947,953,971,977,1019,1049,1097,1163,1187,1193,1217,1259,1283,1289,1307,1409
%N A051084 Primes p such that x^30 = -2 has a solution mod p.
%C A051084 Complement of A216746 relative to A000040. - _Vincenzo Librandi_, Sep 17 2012
%H A051084 Vincenzo Librandi, <a href="/A051084/b051084.txt">Table of n, a(n) for n = 1..1000</a>
%t A051084 ok[p_]:= Reduce[Mod[x^30 + 2, p] == 0, x, Integers] =!= False; Select[Prime[Range[500]], ok] (* _Vincenzo Librandi_, Sep 15 2012 *)
%o A051084 (PARI) /* see A051071 */
%o A051084 (Magma) [p: p in PrimesUpTo(1410) | exists(t){x : x in ResidueClassRing(p) | x^30 eq - 2}]; // _Vincenzo Librandi_, Sep 15 2012
%K A051084 nonn,easy
%O A051084 1,1
%A A051084 _N. J. A. Sloane_
%E A051084 More terms from _Joerg Arndt_, Jul 27 2011